基于c++的贪吃蛇代码

Posted 2022-09-09 qianrushi1

#include <windows.h>
#include <stdlib.h>
#include <conio.h>
#include <time.h>
#include <cstring>
#include <cstdio>
#include <iostream>
#define N 22
using namespace std;
int gameover;
int x1, y1; // 随机出米
int x,y;
long start;
//=======================================
//类的实现与应用initialize
//=======================================
//下面定义贪吃蛇的坐标类
class snake_position

public:

int x,y; //x表示行，y表示列
snake_position() ;
void initialize(int &);//坐标初始化
;
snake_position position[(N-2)*(N-2)+1]; //定义贪吃蛇坐标类数组，有(N-2)*(N-2)个坐标
void snake_position::initialize(int &j)

x = 1;
y = j;

//下面定义贪吃蛇的棋盘图
class snake_map

private:
char s[N][N];//定义贪吃蛇棋盘，包括墙壁。
int grade, length;
int gamespeed; //前进时间间隔
char direction; // 初始情况下，向右运动
int head,tail;
int score;
bool gameauto;
public:
snake_map(int h=4,int t=1,int l=4,char d=77,int s=0):length(l),direction(d),head(h),tail(t),score(s)
void initialize(); //初始化函数
void show_game();
int updata_game();
void setpoint();
void getgrade();
void display();
;
//定义初始化函数，将贪吃蛇的棋盘图进行初始化
void snake_map::initialize()

int i,j;
for(i=1; i<=3; i++)
s[1][i] = ‘*‘;
s[1][4] = ‘#‘;
for(i=1; i<=N-2; i++)
for(j=1; j<=N-2; j++)
s[i][j]=‘ ‘; // 初始化贪吃蛇棋盘中间空白部分
for(i=0; i<=N-1; i++)
s[0][i] = s[N-1][i] = ‘-‘; //初始化贪吃蛇棋盘上下墙壁
for(i=1; i<=N-2; i++)
s[i][0] = s[i][N-1] = ‘|‘; //初始化贪吃蛇棋盘左右墙壁

//============================================
//输出贪吃蛇棋盘信息
void snake_map::show_game()

system("cls"); // 清屏
int i,j;
cout << endl;
for(i=0; i<N; i++)

cout << ‘\t‘;
for(j=0; j<N; j++)
cout<<s[i][j]<<‘ ‘; // 输出贪吃蛇棋盘
if(i==2) cout << "\t等级：" << grade;
if(i==6) cout << "\t速度：" << gamespeed;
if(i==10) cout << "\t得分：" << score << "分" ;
if(i==14) cout << "\t暂停：按一下空格键" ;
if(i==18) cout << "\t继续：按两下空格键" ;
cout<<endl;


//输入选择等级
void snake_map::getgrade()

cin>>grade;
while( grade>7 || grade<1 )

cout << "请输入数字1-7选择等级，输入其他数字无效" << endl;
cin >> grade;

switch(grade)

case 1:
gamespeed = 1000;
gameauto = 0;
break;
case 2:
gamespeed = 800;
gameauto = 0;
break;
case 3:
gamespeed = 600;
gameauto = 0;
break;
case 4:
gamespeed = 400;
gameauto = 0;
break;
case 5:
gamespeed = 200;
gameauto = 0;
break;
case 6:
gamespeed = 100;
gameauto = 0;
break;
case 7:
grade = 1;
gamespeed = 1000;
gameauto = 1;
break;


//输出等级，得分情况以及称号
void snake_map::display()

cout << "\n\t\t\t\t等级：" << grade;
cout << "\n\n\n\t\t\t\t速度：" << gamespeed;
cout << "\n\n\n\t\t\t\t得分：" << score << "分" ;

//随机产生米
void snake_map::setpoint()

srand(time(0));
do

x1 = rand() % (N-2) + 1;
y1 = rand() % (N-2) + 1;

while(s[x1][y1]!=‘ ‘);
s[x1][y1]=‘*‘;

char key;
int snake_map::updata_game()

gameover = 1;
key = direction;
start = clock();
while((gameover=(clock()-start<=gamespeed))&&!kbhit());
//如果有键按下或时间超过自动前进时间间隔则终止循环
if(gameover)

getch();
key = getch();

if(key == ‘ ‘)

while(getch()!=‘ ‘) ; //这里实现的是按空格键暂停，按空格键继续的功能，但不知为何原因，需要按两下空格才能继续。这是个bug。

else
direction = key;
switch(direction)

case 72:
x= position[head].x-1;
y= position[head].y;
break; // 向上
case 80:
x= position[head].x+1;
y= position[head].y;
break; // 向下
case 75:
x= position[head].x;
y= position[head].y-1;
break; // 向左
case 77:
x= position[head].x;
y= position[head].y+1; // 向右

if(!(direction==72||direction==80||direction==75 ||direction==77)) // 按键非方向键
gameover = 0;
else if(x==0 || x==N-1 ||y==0 || y==N-1) // 碰到墙壁
gameover = 0;
else if(s[x][y]!=‘ ‘&&!(x==x1&&y==y1)) // 蛇头碰到蛇身
gameover = 0;
else if(x==x1 && y==y1)

// 吃米，长度加1
length ++;
if(length>=8 && gameauto)

length -= 8;
grade ++;
if(gamespeed>=200)
gamespeed -= 200; // 改变贪吃蛇前进速度
else
gamespeed = 100;

s[x][y]= ‘#‘; //更新蛇头
s[position[head].x][position[head].y] = ‘*‘; //吃米后将原先蛇头变为蛇身
head = (head+1) % ( (N-2)*(N-2) ); //取蛇头坐标
position[head].x = x;
position[head].y = y;
show_game();
gameover = 1;
score += grade*20; //加分
setpoint(); //产生米

else

// 不吃米

s[position[tail].x][position[tail].y]=‘ ‘;//将蛇尾置空
tail= (tail+1) % ( (N-2) * (N-2) );//更新蛇尾坐标
s[position[head].x][position[head].y]=‘*‘; //将蛇头更为蛇身
head= (head+1) % ( (N-2) * (N-2) );
position[head].x = x;
position[head].y = y;
s[position[head].x][position[head].y]=‘#‘; //更新蛇头
gameover = 1;

return gameover;

//====================================
//主函数部分
//====================================
int main()

char ctn = ‘y‘;
int nodead;
cout<<"\n\n\n\n\n\t\t\t 欢迎进入贪吃蛇游戏!"<<endl;//欢迎界面;
cout<<"\n\n\n\t\t\t 按任意键马上开始。。。"<<endl;//准备开始;;
getch();

while( ctn==‘y‘ )

system("cls"); // 清屏
snake_map snake;
snake.initialize();
cout << "\n\n请输入数字选择游戏等级：" << endl;
cout << "\n\n\n\t\t\t1.等级一：速度 1000 \n\n\t\t\t2.等级二：速度 800 \n\n\t\t\t3.等级三：速度 600 ";
cout << "\n\n\t\t\t4.等级四：速度 400 \n\n\t\t\t5.等级五：速度 200 \n\n\t\t\t6.等级六：速度 100 \n\n\t\t\t7.自动升级模式" << endl;
snake.getgrade();//获取等级
for(int i=1; i<=4; i++)

position[i].initialize(i);//初始化坐标

snake.setpoint(); // 产生第一个米
do

snake.show_game();
nodead = snake.updata_game();

while(nodead);

system("cls"); //清屏
cout << "\n\n\n\t\t\t\tGameover！\n\n"<<endl;
snake.display();//输出等级/得分情况
cout << "\n\n\n\t\t 是否选择继续游戏？输入 y 继续，n 退出" << endl;
cin >> ctn;

return 0;